摘要:
A method of manufacturing a semiconductor device is disclosed in which a metallic deposit is stably formed on the anode side with small variation in film thickness, and plating is prevented on the cathode side without carrying out any additional processing on the cathode side. The processed anode side causes no interference in subsequent processing. Insulator films are used to cover a scribe line, as well as a field plate or an open electrode provided on a surface of a silicon substrate before Ni electroless plating of an aluminum electrode is performed to form a metallic deposit on the electrode.
摘要:
A semiconductor device includes a first metal foil, an insulating sheet mounted on an upper surface of the first metal foil main, at least one second metal foil mounted on the insulating sheet, at least one solder layer mounted on the at least one second metal foil, and at least one semiconductor element mounted on the at least one second metal foil through the at least one solder layer. The at least one semiconductor has a thickness of 50 μm or greater and less than 100 μm.
摘要:
To provide: a method of manufacturing a ring-shaped member that can efficiently manufacture a stronger backup ring that reinforces a seal member disposed in a pressure introduction chamber of a fuel injection valve; the backup ring; and a seal structure for a fuel injection valve disposed with the backup ring.A method of manufacturing a ring-shaped member that is manufactured by subjecting a rigid flat-shaped base material to burring includes: a step of forming a prepared hole with respect to the base material; a step of pressing an edge portion of the prepared hole to thereby bend the edge portion using a first punch member that has a diameter that is larger than the diameter of the prepared hole and is tapered towards its distal end portion; and a step of forming a flange portion by press-inserting, with respect to the prepared hole whose edge portion has been bent, a second punch member that has a diameter that is smaller than the diameter of the first punch member and is tapered towards its distal end portion.
摘要:
An optical deflector includes a plurality of piezoelectric unimorph oscillating bodies (210a to 210d) that cause a reflecting plate (1) to oscillate rotationally, centering upon a pair of flexible support units (2a and 2b). The optical deflector forms a single structure of the oscillating plates (23a to 23b), the reflecting plate (1), the flexible support units (2a and 2b), and a support body (9), by connecting one set of the terminals of the oscillating plates (23a to 23d) of the suite of piezoelectric unimorph oscillating bodies (210a to 210d) to the flexible support units (2a and 2b), and connecting the other set of terminals to the support body (9). Furthermore, the plurality of piezoelectric unimorph oscillating bodies (210a to 210d) each respectively comprise a plurality of parallel oscillating bodies (23a1 to 23a-3, 23b-1 to 23b-3, 23c-1 to 23c-3), and (23d-1 to 23d-3), and a suite of parallel actuators (28a-1 to 28a-3, 28c-1 to 28c-3, and 28d-1 to 28d-3).
摘要:
An ink jet head that can be easily connected to an external circuit is provided without an increase in the number of production procedures. Diaphragms and a diaphragm external electrode having the same thickness as the diaphragms are formed on a silicon substrate that is a first substrate located on the same plane as the diaphragms. The diaphragm external electrode is located within 2 &mgr;m from the individual external electrodes of a plurality of electrodes on a second substrate.
摘要:
An optical scanner, including a frame member; a pair of connection members near a coupling end with the frame member; a pair of elastic members connected with the frame member by the connection members; a mirror substrate supported by the pair of elastic members, the mirror substrate having a bending rigidity outward from the rotational axis for each area in accordance with a bending moment caused by oscillation, the mirror substrate having a slit at both connection ends with the pair of elastic members; and a piezoelectric element provided on each of the connection members, the piezoelectric element generating a torque for driving the mirror substrate oscillatable back and forth around the pair of elastic members as a torsion rotational axis.
摘要:
A method for manufacturing a semiconductor module, includes the steps of preparing a board; mounting a semiconductor device on the second metal foil; placing a resin case onto the board for surrounding a first metal foil, an insulating sheet, the second metal foil, and the semiconductor device; pouring a resin in a paste form into the case to fill a space relative to the first metal foil, insulating sheet, the second metal foil and the semiconductor device; and heat-curing the resin. A bottom end of a peripheral wall of the case is located above a bottom surface of the first metal. The bottom surface of the first metal foil and the resin form a flat bottom surface to contact an external mounting member.
摘要:
A semiconductor module includes a first metal foil; an insulating sheet mounted on a top surface of the first metal foil; at least one second metal foil mounted on a top surface of the insulating sheet; at least one semiconductor device mounted on the second metal foil; and a resin case for surrounding the first metal foil, insulating sheet, second metal foil, and semiconductor device. A bottom end of a peripheral wall of the resin case is located above a bottom surface of the first metal foil. A resin is provided inside the resin case to fill the inside of the resin case. The bottom surface of the first metal foil and the resin form a flat bottom surface so that the flat bottom surface contacts an external mounting member.
摘要:
An optical scanner, including a frame member; a pair of connection members near a coupling end with the frame member; a pair of elastic members connected with the frame member by the connection members; a mirror substrate supported by the pair of elastic members, the mirror substrate having a bending rigidity outward from the rotational axis for each area in accordance with a bending moment caused by oscillation, the mirror substrate having a slit at both connection ends with the pair of elastic members; and a piezoelectric element provided on each of the connection members, the piezoelectric element generating a torque for driving the mirror substrate oscillatable back and forth around the pair of elastic members as a torsion rotational axis.
摘要:
An optical scanning apparatus includes a vibration mirror having a mirror surface that reflects an optical beam. A pair of torsion beams swingably support the mirror. The mirror is vibrated in a sealed space whose pressure is adjusted such that a characteristic of the mirror falls within a predetermined range.